Posted by **Megan** on Sunday, January 30, 2011 at 8:08pm.

A mass M is initially at rest on a horizontal surface, μs=0.30 and μk=0.20 . A horizontal string then pulls M with a tension T. Forces below are magnitudes. Indicate if each statement is correct or incorrect

If M does not accelerate, then T ≤ μsN

M will accelerate if T exceed μsN

The NET force on M (if M does not move) is T

N equals Mg

T equals μsN if M remains at rest

M will accelerate if T exceeds μkN